Charging apparatus for car storage batteries

Details Charging apparatus for car storage batteries Charging apparatus for car storage batteries

1998-01-13

1999-08-10

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

H02J 700

Patent

active

059363819

ABSTRACT:
The present invention is a charging apparatus devised to make it possible with the help of another car to start a failed engine resulted from an old storage battery or from over-charging by inserting cigar jack in a car without opening the bonnet and without the issue of polarity arising. In general, enough current can't be attained even if storage batteries in two cars are connected through a cigar jack. This is due to the narrow difference between the voltage of the two storage batteries. Furthermore, sufficient current can not be attained and it takes a long time because the voltage drop caused by internal resistance in the cable is not negligible. To resolve such problems, the present invention includes a small-sized switch mode power supply, generates needed voltage from the power source and outputs the voltage overlapped to the supplying voltage, which creates an effective charging in a short time. In addition, it aims to achieve safer operation by built-in maximum current limiting circuit and voltage regulating circuit.

REFERENCES:
patent: 4527111 (1985-07-01), Branham
patent: 4638236 (1987-01-01), Carr et al.
patent: 4641229 (1987-02-01), Easter
patent: 5155670 (1992-10-01), Brian
patent: 5281904 (1994-01-01), Tomkins
patent: 5410467 (1995-04-01), Smith et al.
patent: 5488554 (1996-01-01), Green
patent: 5637978 (1997-06-01), Kellett et al.
patent: 5793185 (1998-08-01), Prelec et al.

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